Experiencing problems with BF3, occasionally getting severe lagging and 'warping'. Did a pingtest when I was experiencing problems, and I got packet loss from 30-60%. Turned off QoS, and everything was fine. My network had a load of about 1Mbps up and down when I was experiencing the problem. It's recurring, but not always present. I've failed to find any connection to specific traffic related to the problem.
VOIP also often becomes laggy, both with Skype and Teamspeak. Disabling QoS remedies the problem (but raises my ping alot).

The computer that I'm using is using a wired connection, and the network has about 20 network devices connected, but the average load is pretty low.

If anyone has any tips at how to help me find a solution to this problem, I would be very grateful!